Soak potatoes in water for a half hour while you heat 1/2 cup (or if bigger pan 1/2 inch) of oil in a cast iron skillet. (Note: Soaking the potatoes is important to get the starch out so they will crisp up nicely!)
Drain and pat dry potatoes with a paper towel.
Fry potatoes in pan turning occasionally until golden brown.
Place cooked potatoes on a paper towel lined plate. Be sure to salt potatoes while still hot. Enjoy!